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Combined effects of landscape composition and heterogeneity on farmland avian diversity

2017Artigo científico Acesso aberto
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dc.contributor.authorSantana, Joana
dc.contributor.authorReino, Luís
dc.contributor.authorStoate, Chris
dc.contributor.authorMoreira, Francisco
dc.contributor.authorRibeiro, Paulo F.
dc.contributor.authorSantos, José L.
dc.contributor.authorRotenberry, John T.
dc.contributor.authorBeja, Pedro
dc.date.accessioned2017-06-06T13:52:27Z
dc.date.available2017-06-06T13:52:27Z
dc.date.issued2017
dc.description.abstractConserving biodiversity on farmland is an essential element of worldwide efforts for reversing the global biodiversity decline. Common approaches involve improving the natural component of the landscape by increasing the amount of natural and seminatural habitats (e.g., hedgerows, woodlots, and ponds) or improving the production component of the landscape by increasing the amount of biodiversity-friendly crops. Because these approaches may negatively impact on economic output, it was suggested that an alternative might be to enhance the diversity (compositional heterogeneity) or the spatial complexity (configurational heterogeneity) of land cover types, without necessarily changing composition. Here, we develop a case study to evaluate these ideas, examining whether managing landscape composition or heterogeneity, or both, would be required to achieve conservation benefits on avian diversity in open Mediterranean farmland. We surveyed birds in farmland landscapes of southern Portugal, before (1995–1997) and after (2010–2012) the European Union’s Common Agricultural Policy (CAP) reform of 2003, and related spatial and temporal variation in bird species richness to variables describing the composition, and the compositional and configurational heterogeneity, of the natural and production components of the landscape. We found that the composition of the production component had the strongest effects on avian diversity, with a particularly marked effect on the richness of farmland and steppe bird species. Composition of the natural component was also influential, mainly affecting the richness of woodland/shrubland species. Although there were some effects of compositional and configurational heterogeneity, these were much weaker and inconsistent than those of landscape composition. Overall, we suggest that conservation efforts in our area should focus primarily on the composition of the production component, by striving to maximize the prevalence of biodiversity-friendly crops. This recommendation probably applies to other areas such as ours, where a range of species of conservation concern is strongly associated with crop habitatspt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citation"Ecology and Evolution". ISSN 2045-7758. 7 (2017) , p.1212-1223pt_PT
dc.identifier.issn2045-7758
dc.identifier.urihttp://hdl.handle.net/10400.5/13725
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherWiley Open Accesspt_PT
dc.relationBPD/93079/2013, IF/01053/2015, SFRH/BD/87530/2012, PTDC/AGR-AAM/102300/2008 and PTDC/ BIA-BIC/2203/2012-FCOMP-01-0124- FEDER-028289pt_PT
dc.subjectagriculture intensificationpt_PT
dc.subjectbiodiversity conservationpt_PT
dc.subjectbird species richnesspt_PT
dc.subjectcompositional heterogeneitypt_PT
dc.subjectlandscape compositionpt_PT
dc.titleCombined effects of landscape composition and heterogeneity on farmland avian diversitypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleEcology and Evolutionpt_PT
person.familyNameNunes Valente Afonso Reino
person.givenNameLuís Miguel
person.identifierA-9261-2008
person.identifier.ciencia-idAB18-2DB9-F3C6
person.identifier.orcid0000-0002-9768-1097
person.identifier.scopus-author-id55893475900
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationc44ecf81-18aa-4d6e-ae6c-762ac3230671
relation.isAuthorOfPublication.latestForDiscoveryc44ecf81-18aa-4d6e-ae6c-762ac3230671

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